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Table 1 Classification and diagnosis of temporomandibular disorder (TMD) subgroups based on Research Diagnostic Criteria for Temporomandibular Disorder (RDC/TMD)

From: Effect of mandibular mobilization on electromyographic signals in muscles of mastication and static balance in individuals with temporomandibular disorder: study protocol for a randomized controlled trial

Group Subgroup
I A. myofascial pain
  B. myofascial pain with limited opening
  No group I diagnosis
II right A. disk displacement with reduction
  B. disk displacement without reduction with limited opening
  C. disk displacement without reduction without limited opening
  No group II diagnosis
II left A. disk displacement with reduction
  B. disk displacement without reduction with limited opening
  C. disk displacement without reduction without limited opening
  No group II diagnosis
III right A. arthralgia
  B. osteoarthitis of TMJ
  C. osteoarthosis of TMJ
  No group III diagnosis
III left A. arthralgia
  B. osteoarthitis of TMJ
  C. osteoarthosis of TMJ
  No group III diagnosis